A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery.
Classification: Nuts of iron or steel
NSN 6145-00-934-0331
NSN 5975-01-327-2316
NSN 4140-01-406-5344
NSN 6130-01-390-2675
NSN 6110-01-179-9696
NSN 5996-01-114-8956
NSN 5999-01-432-0345
NSN 6620-01-512-2016
NSN 5935-00-082-1493
NSN 5990-00-538-7962
NSN 5920-01-157-9471
NSN 5835-01-392-3105